CN104126641A - High-voltage field plasma and nano photocatalysis synergistic sterilizing and preserving method for fresh meat - Google Patents
High-voltage field plasma and nano photocatalysis synergistic sterilizing and preserving method for fresh meat Download PDFInfo
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- CN104126641A CN104126641A CN201410347682.3A CN201410347682A CN104126641A CN 104126641 A CN104126641 A CN 104126641A CN 201410347682 A CN201410347682 A CN 201410347682A CN 104126641 A CN104126641 A CN 104126641A
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- 238000000576 coating method Methods 0.000 claims abstract description 66
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 36
- 239000007822 coupling agent Substances 0.000 claims abstract description 17
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- 239000004033 plastic Substances 0.000 claims abstract description 13
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- 239000007789 gas Substances 0.000 claims description 9
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- 229920006280 packaging film Polymers 0.000 claims description 9
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- 238000006555 catalytic reaction Methods 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 241000894006 Bacteria Species 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
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- 229910010413 TiO 2 Inorganic materials 0.000 claims description 4
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- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
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- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 2
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- 244000005700 microbiome Species 0.000 description 4
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/015—Preserving by irradiation or electric treatment without heating effect
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
- B65B55/02—Sterilising, e.g. of complete packages
- B65B55/12—Sterilising contents prior to, or during, packaging
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a high-voltage field plasma and nano photocatalysis synergistic sterilizing and preserving method for fresh meat, and belongs to the technical field of cold sterilization of food packages. A photocatalyst, a coupling agent and a coating liquid are subjected to high-speed uniform mixing, the above raw materials are uniformly mixed and coupled to form a modified coating liquid and the surface of a plastic package film is coated with the modified coating liquid, so as to prepare a package material with photocatalysis bacteriostasis function; the fresh meat is subjected to MAP package by using antimicrobial packaging materials, wherein the coating layer containing the photocatalysis material is arranged on the inner side of the package; the fresh meat in the MAP package is arranged between two electrodes of a plasma generation device, and subjected to plasma sterilization in the high-voltage field. The high-voltage field plasma sterilization time is short, so that heat amount and temperature on the package and in the package do not change. Thus, the synergistic sterilizing and preserving method is a high efficient cold sterilizing method and especially suitable for preserving packages of fresh meat.
Description
Technical field
The invention belongs to packaging for foodstuff cold sterilization technology field, be specifically related to a kind of fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method.
Background technology
Fresh-keeping packaging is the important technology method that at present international fresh livestock and poultry meat logistics progress security quality guarantees, it is to sell containing oxygen packing cold storage mode that there is 80% chicken in the U.S..But the shelf life of fresh livestock and poultry meat fresh-keeping packaging is decided by the sterilization processing effect in processing and packing process, MAP is current conventional fresh meat fresh-preserving packing method in the world, but the microorganism in circulation sale process, especially spoilage organisms and pathogenic bacteria, remain the main cause that causes food security Quality Accident.
Can have for the method for fresh meat surface disinfection multiple, but most of method existent defect all.Some treatment systems need high pressure, can cause that the sensory effects on fresh meat surface declines; It is not high to fresh meat surface disinfection effect that ultraviolet lighting is processed, and irregularly shaped due to fresh meat meat surface, the sterilization blind area that can produce ultraviolet lighting; High-pressure pulse electric has limitation in the application of fresh meat sterilization, and being embodied in fresh meat in processing procedure needs directly to contact with electrode; And the sterilization mode that contains heat heating process can produce and have a strong impact on the consumption quality of fresh meat.In view of the shortcoming of above-mentioned method for disinfection, also do not have a kind of method for disinfection can be effective to the bactericidal action afterwards of fresh meat packing at present.Therefore, effective cold sterilization processing after a kind of energy is packed for fresh meat, and keep the perception quality of product and safe method, and be the important breakthrough of fresh food fresh-keeping package technology, will advance the development of fresh food logistics fresh-keeping packaging security quality control technology.
Summary of the invention
The object of the invention is provides a kind of fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method for above-mentioned technical problem.The method is implemented cold sterilization fresh-keeping with the fresh meat that high voltage electric field production plasma comes synergic nano material light catalysis to pack MAP and is processed, avoid the microorganism secondary pollution of packaging product, for fresh livestock and poultry meat MAP packaging product provides a kind of safe and efficient easy to operate, can effectively extend the cold sterilization fresh-keeping method of shelf freshness date.
Object of the present invention can be achieved through the following technical solutions:
A fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method, the method comprises the following steps:
1) preparation of antibiotic packaging material: photochemical catalyst, coupling agent and coating fluid are mixed at a high speed, mix rear coupling and prepare modification coating fluid, thereby the surface that afterwards this modification coating fluid is coated on to plastic packaging film is prepared into the packaging material with photocatalysis bacteria resistance function;
2) fresh meat being adopted to step 1) packaging material that prepare carry out MAP packing, and the coating that wherein contains catalysis material is positioned at packing inner side;
3) fresh meat through MAP packing is placed between two electrodes of plasma producing apparatus, under high voltage electric field condition, carries out plasma sterilization processing.
In technical solution of the present invention: step 1) in the material of plastic packaging film be polyamide, polypropylene, polyethylene, polyvinyl chloride or polyester, be preferably polyamide; Coating fluid is PVA coating fluid, PE coating fluid or PVDC coating fluid, and the mass concentration of coating fluid is 2～8%; Photochemical catalyst is nano-TiO
2, nano-ZnO or nanometer Fe
2o
3in at least one, the consumption of photochemical catalyst is 0.3～2g/L
coating fluid, the consumption of preferred light catalyst is 0.45～0.65g/L
coating fluid.
In technical solution of the present invention: step 2) in the gas that is filled with in MAP packaging process be at least one in carbon dioxide, oxygen, nitrogen, helium, neon and argon gas.
In technical solution of the present invention: step 3) applying plasma generating means comprises regulating and controlling voltage device, high voltage electric field generator, top electrode, bottom electrode and insulation protective board, places the fresh food after MAP packing in the middle of upper/lower electrode; Between the upper surface of packing box and top electrode, be provided with insulation protective board, between the lower surface of packing box and bottom electrode, be provided with lower insulation protective board; The insulation protective board adopting is polypropylene or polyethylene board, and the thickness of upper strata backplate is 1.3～1.8mm, and the thickness of lower floor's backplate is 1.8～3.5mm; Voltage strength 10～the 50kv/cm of plasma generating device, the time of processing is 1s～6min; Preferred voltage intensity is 25～35kv/cm, processing time 30～90s; Another kind of technical scheme preferred voltage intensity is 25～35kv/cm, and the plasma treatment time is 60～180s.
The technical scheme that the surface that modification coating fluid is coated on to plastic packaging film described in technical solution of the present invention adopts does not have specified otherwise.This technical scheme is means well known in the art.Technical solution of the present invention is to utilize coating machine at the modification coating fluid liquid of the surface uniform coating thin layer of plastic packaging film, utilizes afterwards dry answering a pager's call will use nip rolls while being coated with, and makes coating more even.Finally be placed on the curing chamber Rio 5,6 hours of 40 ℃～50 ℃, can effectively improve adhesive force.
The coupling agent adopting in technical solution of the present invention does not have specified otherwise, comprises and is not limited to coupling agent 570 or coupling agent 550, and the consumption of coupling agent is 10～15mg/100g
coating fluid.
To modification coating fluid, the coated weight on plastic packaging film surface does not have specified otherwise to technical solution of the present invention, and preferably the coated weight of use is 0.3～5g/m
2.
The consumption of the photochemical catalyst described in technical solution of the present invention is 0.3～2g/L
coating fluidthe addition that is catalyst in every liter of coating fluid is 0.3～2g.
The consumption of the coupling agent described in technical solution of the present invention is 10～15mg/100g
coating fluidthe consumption that is coupling agent in every 100g coating fluid is 10～15mg.
Beneficial effect of the present invention:
(1) adopting two-layered medium barrier system is plasma generation system, fresh meat after MAP packing is processed, the high voltage electric field electrode of producing plasma is placed on packing of product outside, plasma produces at package interior, can comprehensively act on package interior product and microorganism, not be affected by the external environment, also avoided the secondary pollution of product.
(2) adopt nano-metal-oxide as catalysis material, utilize the ultraviolet light producing at package interior in high voltage electric field plasma generating process to realize nano-photo catalytic bactericidal action, the micro-organisms bactericidal action of coordinated with plasma to package interior.
(3) oxygen of MAP package interior, carbon dioxide, nitrogen and steam are as the dielectric gas of producing plasma, the ozone of producing in packing and active oxygen radical and ultraviolet light etc., synergic nano light catalytic sterilization, its bactericidal effect is good, noresidue, nothing have toxic byproduct to produce, and have avoided adopting the safety issue of chemical bactericide.
(4) high voltage electric field pdp body synergic nano light catalytic sterilization fresh-keeping method carries out at normal temperatures and pressures, and the processing time is short, can not produce heat and variations in temperature in packing and package interior, be a kind of efficient cool sterilization technology, the fresh-keeping packaging of especially suitable fresh meat.
Accompanying drawing explanation
Fig. 1 is high voltage electric field plasma generating system.
The specific embodiment
Below in conjunction with embodiment, the invention will be further described, but protection scope of the present invention is not limited to this:
In the embodiment of the present invention, as shown in Figure 1, this device comprises regulating and controlling voltage device, high voltage electric field generator, top electrode, bottom electrode and insulation protective board for high voltage electric field plasma generating system used, places the fresh food after MAP packing in the middle of upper/lower electrode; Between the upper surface of packing box and top electrode, be provided with insulation protective board, between the lower surface of packing box and bottom electrode, be provided with lower insulation protective board; The insulation protective board adopting is polypropylene or polyethylene board, and the thickness of upper strata backplate is 1.3～1.8mm, and the thickness of lower floor's backplate is 1.8～3.5mm.
The sample that embodiment 1～4 and comparative example 1 adopt is fresh grade breast (chicken fillet), this fresh grade breast is chosen at random from the chicken cutting production line of slaughterhouse's workshop, be placed on and in ice chest, transport laboratory back, chicken surface is removed and retained middle aseptic part, keep the similar weight of Fresh Grade Breast at 95 ± 5g, at bacterium M.caseolyticus and the P.fluorescens of chicken surface seeding concentration known.
In embodiment 1～4, the coated weight of modification coating fluid on plastic packaging film surface is 0.3～5g/m
2.
Embodiment 1
First by after PVA particle heating, be dissolved in 100ml distilled water, obtain mass concentration and be 4.5% PVA coating fluid; Afterwards by nano-TiO
2join in PVA coating fluid and fully and stir and make uniform suspension with coupling agent 570, thereby prepare modification coating fluid, wherein, nano-TiO
2consumption be 0.5g/L
coating fluid, the consumption of coupling agent 570 is 10mg/100g
coating fluid; Finally this modification coating fluid is coated on polyamide (PA) plastic foil, drying and forming-film prepares antibacterial packaging material.
Learn from else's experience the pretreated chicken that obtains in food container, and use antibacterial packaging material to carry out MAP packing, the coating that contains catalysis material is positioned at packing inner side, the gas being filled with in packaging process is oxygen+Ar (volume ratio is 1:1), packing box after packing is placed on and between electrode, carries out Cement Composite Treated by Plasma, the time of plasma treatment is 60s, and the voltage strength of processing is 30kv/cm.
Embodiment 2
First by after PVA particle heating, be dissolved in 100ml distilled water, obtain mass concentration and be 3.5% PVA coating fluid; Afterwards nano-ZnO and coupling agent 570 are joined in coating fluid and fully and stir and make uniform suspension, thereby prepare modification coating fluid, wherein, the consumption of nano-ZnO is 0.5g/L
coating fluid, the consumption of coupling agent 570 is 11mg/100g
coating liquid; Finally this modification coating fluid is coated on polyamide (PA) plastic foil, drying and forming-film prepares antibacterial packaging material.
Learn from else's experience the pretreated chicken that obtains in food container, and use antibacterial packaging material to carry out MAP packing, the coating that contains catalysis material is positioned at packing inner side, and the gas being filled with in packaging process is N
2+ O
2(volume ratio is 1:1), is placed on the packing box after packing between electrode and carries out Cement Composite Treated by Plasma, and the time of plasma treatment is 120s, and the voltage strength of processing is 30kv/cm.
Embodiment 3
First by after PVDC particle heating, be dissolved in 100ml distilled water, obtain mass concentration and be 5.8% PVDC coating fluid; Afterwards by nanometer Fe
2o
3join in coating fluid and fully and stir and make uniform suspension with coupling agent 570, thereby prepare modification coating fluid, wherein, nanometer Fe
2o
3consumption be 0.5g/L
coating fluid, the consumption of coupling agent 570 is 12mg/100g
coating fluid; Finally this modification coating fluid is coated on polyamide (PA) plastic foil, drying and forming-film prepares antibacterial packaging material.
Learn from else's experience the pretreated chicken that obtains in food container, and use antibacterial packaging material to carry out MAP packing, the coating that contains catalysis material is positioned at packing inner side, and the gas being filled with in packaging process is CO
2+ N
2(volume ratio is 1:1), is placed on the packing box after packing between electrode and carries out Cement Composite Treated by Plasma, and the time of plasma treatment is 180s, and the voltage strength of processing is 30kv/cm.
Embodiment 4
First by after PVA particle heating, be dissolved in 100ml distilled water, obtain mass concentration and be 3.5% PVA coating fluid; Afterwards by nanometer Fe
2o
3, nano-ZnO and coupling agent 570 join in PVA coating fluid, fully stir and make uniform suspension, thereby prepare modification coating fluid, wherein, nanometer Fe
2o
3consumption be 0.3g/L
coating fluid, the consumption of nano-ZnO is 0.3g/L
coating fluid, the consumption of coupling agent 570 is 10mg/100g
coating fluid; Finally this modification coating fluid is coated on polyamide (PA) plastic foil, drying and forming-film prepares antibacterial packaging material.
Learn from else's experience the pretreated chicken that obtains in food container, and use antibacterial packaging material to carry out MAP packing, the coating that contains catalysis material is positioned at packing inner side, and the gas being filled with in packaging process is O
2+ CO
2+ N
2(volume ratio is 1:1:1), is placed on the packing box after packing between electrode and carries out Cement Composite Treated by Plasma, and the time of plasma treatment is 120S, and the voltage strength of processing is 30kv/cm.
Comparative example 1
Embodiment condition is identical with embodiment 1, only antibiotic packaging material is changed into common polyamide (PA)/polyethylene film.
Performance Detection:
1, the detection of bacterial clump quantity
P.fluorescens and M.caseolyticus experimental strain in the corrupt chicken that bacteria suspension adopts, shaking table is cultured to suitable concentration, and removing culture medium, to use aseptic PBS to make bacteria suspension standby.The sample of embodiment 1～5 and comparative example 1 P.fluorescens bacterial strain content before sterilization processing is 6.15 ± 0.41log, and M.caseolyticus bacterial strain content is 6.39 ± 0.32log.
The bacterial strain content of sample in embodiment 1～4 and comparative example 1 after plasma sterilization processing is as shown in table 1.
After table 1 Cement Composite Treated by Plasma, chicken surface bacteria colony counts changes
| Project | P.fluorescens(log) | M.caseolyticus(log) |
| Embodiment 1 | 2.66±0.14 | 3.0±0 |
| Embodiment 2 | 3.06±0.35 | 3.36±0.21 |
| Embodiment 3 | 3.34±2.81 | 3.75±0.28 |
| Embodiment 4 | 3.75±0.42 | 4.0±0.32 |
| Comparative example 1 | 5.15±0.35 | 5.50±0.01 |
As can be seen from Table 1, after Cement Composite Treated by Plasma, in self-control novel antibacterial nano material film packages groups, the colony counts of M.caseolyticus and P.fluorescens is well below normal film packages groups.
2, the impact of different storage time on colony counts and color
After table 2 Cement Composite Treated by Plasma, pack chicken surface detail bacterium colony number change
The impact of table 3 Cement Composite Treated by Plasma packing chicken aberration L* in storage
After Cement Composite Treated by Plasma, the colony counts on packing chicken surface is compared control group obvious minimizing, as shown in table 2.Wherein the chicken of control group can be preserved and be no more than 7 days at 4 ℃, and in the time of 7 days, bacterial clump quantity has surpassed 7log, and chicken has rotten trend; And make photoactivation packaging film packing chicken, and after Cement Composite Treated by Plasma, can at 4 ℃, be saved to 14 days, be 2 times of control group.In storage chicken surface color change as shown in table 3, storage at 4 ℃ after Cement Composite Treated by Plasma, chicken surface color is unchanged.Illustrating that plasma combines with photocatalysis membrana can effectively extend the storage period of chicken, is 2 times of ordinary packing film.
Claims (10)
1. a fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method, is characterized in that: the method comprises the following steps:
1) preparation of antibiotic packaging material: photochemical catalyst, coupling agent and coating fluid are mixed at a high speed, mix rear coupling and prepare modification coating fluid, thereby the surface that afterwards this modification coating fluid is coated on to plastic packaging film is prepared into the packaging material with photocatalysis bacteria resistance function;
2) fresh meat being adopted to step 1) packaging material that prepare carry out MAP packing, and the coating that wherein contains catalysis material is positioned at packing inner side;
3) fresh meat through MAP packing is placed between two electrodes of plasma producing apparatus, under high voltage electric field condition, carries out plasma sterilization processing.
2. fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method according to claim 1, is characterized in that: step 1) in the material of plastic packaging film be
polyamide, polypropylene, polyethylene or polyester.
3. fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method according to claim 1, is characterized in that: step 1) in coating fluid be PVA coating fluid, PE coating fluid or PVDC coating fluid.
4. according to the fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method described in claim 1 or 3, it is characterized in that: step 1) in the mass concentration concentration of coating fluid be 2～8%.
5. fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method according to claim 1, is characterized in that: step 1) in photochemical catalyst be nano-TiO
2, nano-ZnO and nanometer Fe
2o
3in at least one.
6. fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method according to claim 1 or 5, is characterized in that: step 1) in the consumption of photochemical catalyst be 0.3～2g/L
coating fluid, the consumption of preferred light catalyst is 0.45～0.65g/L
coating fluid.
7. fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method according to claim 1, is characterized in that: step 2) in the gas that is filled with in MAP packaging process be at least one in carbon dioxide, oxygen, nitrogen, helium, neon and argon gas.
8. fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method according to claim 1, it is characterized in that: step 3) applying plasma generation device comprises regulating and controlling voltage device, high voltage electric field generator, top electrode, bottom electrode and insulation protective board, places the fresh meat after MAP packing in the middle of upper/lower electrode; Between the upper surface of packing box and top electrode, be provided with insulation protective board, between the lower surface of packing box and bottom electrode, be provided with lower insulation protective board.
9. fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method according to claim 8, it is characterized in that: the insulation protective board of employing is polypropylene or polyethylene board, the thickness of upper strata backplate is 1.3-1.8mm, and the thickness of lower floor's backplate is 1.8-3.5mm.
10. fresh meat high voltage electric field plasma body cooperative nano-photo catalytic sterilization fresh-keeping method according to claim 1, is characterized in that: step 3) the voltage strength 10～50kv/cm of applying plasma generation device, the time of processing is 1s～6min; Preferred voltage intensity is 25～35kv/cm, processing time 30～90s.
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| CN201410347682.3A CN104126641B (en) | 2014-07-18 | 2014-07-18 | High-voltage field plasma and nano photocatalysis synergistic sterilizing and preserving method for fresh meat |
| PCT/CN2014/089001 WO2016008225A1 (en) | 2014-07-18 | 2014-10-21 | Synergistic sterilizing and preserving method for fresh meat with high voltage field plasma and nano photocatalysis |
| US15/305,727 US10450098B2 (en) | 2014-07-18 | 2014-10-21 | Synergistic cold sterilizing and preserving method for fresh meat with high voltage electric field plasma and nano photocatalysis |
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| Publication number | Publication date |
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| US20170043895A1 (en) | 2017-02-16 |
| CN104126641B (en) | 2015-04-08 |
| US10450098B2 (en) | 2019-10-22 |
| WO2016008225A1 (en) | 2016-01-21 |
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